Material world is like a dream.
This beautiful material world is nothing but a shadowy reflection of the reality, the kingdom of God.
Srimad Bhagavatam 1.19.13,
The sound vibration of the Hare Krishna mantra, although presented in the ordinary alphabet, should not be taken as mundane or material.
Srimad bhagavatam 4.9.4,
Material world brings pleasure and miseries.
Everything in Material world is temporary.
Everything is resting on Krishna, and everything is Krishna, but this is not to be realized by persons on the material platform.
Srimad Bhagavatam 10.10.32,